Diamond tools



(No Model.)

T. A. JACKSON.

MOLD FOR CASTING DIAMOND TOOLS. N0. 856,182. Patented. Jan. 18, 1887.

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STATES l ATENT trice.

IVIOLD FOR CASTING DIAMOND-TOOLS.

SPECIFICATION forming part of Letters Patent No. 356,132, dated January 18, 1887.

Application filed September 3,1886. Serial No. 212,609.

To all whom it may concern.:

Be it known that I, THADDnUs A. JACKSON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Molds for Casting Diamond-Tools; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specication, and to the letters and gures of reference marked thereon.

Figure l of the drawings is a perspective view of my improved mold, showing the two side sections connected together and the end section removed therefrom. Fig. 2 is a vertical section taken centrally through the cornplete mold, the same being adapted for forming lathe-tools.; and Fig. 8, a similar ,view of a mold adapted for forming hand-tools.

vThe present invention has for its object to provide a simple, effective, and practical mold for casting and securin g the diamonds in lathe, hand, or other tools; and it consists i-n the details of construction, substantially as shown in the drawings, and hereinafter described and claimed. y

The mold is composed of three sections, A B in the accompanying drawings representing the two side sections, and C the end section, the two side sections being held together by screws or other wellknown fastenings, and are formed upon one end with rabbeted edges a, in which tit fianges b on the moldsection O. This section C has a mortise, c, to form a seat for the carbon or diamond, as shown at d, and is held therein by a wire loop, e, as shown, the matrix of the mold being of a form to correspond with that of the tool to be cast.

(No model.)

I use a piece of wire extending around the Having now fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

l. The combination,with a mold for diamondtools, having a recess for the body portion, of a wire loop located at the end of the said recess for holding the diamond in position during the casting operation, substantially as set forth.

2. In a mold for casting or forming diamondtools, thecombination, with two side sections,

of a detachable end section provided with a mortised seat and perforations through it and means for holding said diamond to the seat, which consist of a wire extending aroundthe same, passed throughVY the perforations, and having its extremities twisted together, substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence n of two witnesses.

THADDEUS A. JACKSON.

Witnesses:

JAMES F. C. BLACKHURST, HARRY CLIFFORD, Jr. 

